#include <stdio.h>
#include <string.h>
#include <stdint.h>

struct doubleString {
    char str1[6];
    char str2[6];
    char str3[6];
    uint64_t k;
};

int main(int argc, char* argv[]) {
    struct doubleString ds;
    ds.k = 0xffffffffffffffff;
    /*
      strncpy(a,b,n) copies 'n' characters from 'b' to 'a'
     */

    strncpy(ds.str1,"Hello",6);
    strncpy(ds.str2,"World.",6);
    strncpy(ds.str3,"Doom!!",6);

    /* puts prints a string */
    puts(ds.str1);

}
